Rin had always known that she had a sister. Quite aside from the family records that she'd had to master after their father passed away, her earliest memories all showed a smiling, child-sized figure omnipresent at her side...
She'd tried to reestablish contact, once, when she realized that they were attending the same middle school, but the overture had been rebuffed with what she thought, from later observation, might have been the only harsh words her sister had ever offered anyone.
She'd known even then that what she was trying to do went against every mage family's tradition, and, with contact clearly unwelcome and her studies making her more and more familiar with the genuine reasons behind most of those traditions, the attempt hadn't been repeated. Instead, she'd been content to watch from a distance, smiling at Sakura's successes and having a quiet - and, if neccessary, forceful - word with the occaisional person who thought that a shy, pretty girl must be easy prey.
The fact that that, all too often, her watching gaze had met an unreadable return from usually-gentle eyes made her think that she wasn't the only one with regrets on the matter, but with Sakura's choice made perfectly clear and the threat of her own Holy Grail War looming ever in the future, she hadn't chosen - hadn't had the courage - to try again. It had seemed like a tradgedy, but a survivable one, and she had resigned herself to the fact that it would remain that way.
Even though she knew that having her here would put her terribly at risk, since the War had already begun, her heart couldn't help but soar at having this second chance with her sister, her only family.
The moment stretched long, and then Rin smiled and stepped to one side of the doorway. "Welcome home."
I don't figure Rin for the demonstratitive type, even though it seems fairly clear from the way they react to meeting each other that both of the sisters are well aware of their... connection.
I'd keep going with this, BTW, but I've got some stuff I need to do for class before too long. Explanations, next time, and Servants.
Ja, -n
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"Puripuri puripuri... Bang!"